8 letter words:
prorogue11,
7 letter words:
grouper10,
regroup10,
6 letter words:
groper9,
pogoer9,
purger9,
poorer8,
pourer8,
repour8,
5 letter words:
grope8,
group8,
porge8,
purge8,
porer7,
prore7,
purer7,
repro7,
roper7,
erugo6,
orgue6,
regur6,
roger6,
rogue6,
rouge6,
urger6,
4 letter words:
goop7,
gorp7,
pogo7,
prog7,
upgo7,
poor6,
pore6,
pour6,
proo6,
puer6,
pure6,
purr6,
repo6,
roop6,
rope6,
roup6,
rurp6,
ergo5,
goer5,
goor5,
gore5,
grue5,
guru5,
ogre5,
rego5,
urge5,
euro4,
rore4,
roue4,
ruer4,
ruru4,
3 letter words:
gup6,
peg6,
pug6,
oop5,
ope5,
oup5,
per5,
poo5,
pre5,
pro5,
pur5,
rep5,
upo5,
urp5,
ego4,
erg4,
geo4,
goe4,
goo4,
gor4,
gue4,
gur4,
reg4,
rug4,
err3,
oor3,
ore3,
our3,
reo3,
roe3,
roo3,
rue3,
ure3,
2 letter words:
op4,
pe4,
po4,
up4,
go3,
gu3,
ug3,
er2,
oe2,
oo2,
or2,
ou2,
re2,
ur2,